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As you may already know Dr. Dmitry Katz was kicked off Twitter. However, he maintains a website with the latest updates on his NIATONIN protocol.
https://niacincurescovid.com
Good article: https://transcendingsquare.com/2021/01/22/niacin-early-treatment-in-general-for-sars-cov-2-is-sensible-reduces-hospitalization-and-mortality-rate/